Warning lamp



FIG. 1 is a front elevational view of the warning lamp showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a right side elevational view thereof; the left side elevational view being a mirror image of the right side elevational view; and,

FIG. 6 is a perspective view taken from the top, front and right side of the warning lamp.

The portion of the article depicted in broken lines is for illustrative purposes only and forms no part of the claimed design 

The ornamental design for a warning lamp, as shown and described. 